Developed for single shot and double rifles around 1906-08 and ballistics are basically on par with the more popular 318 Westley Richards. The 375 leads to some confusion because it is not based on any existing 375 cartridge in use in England during that time. Proof...

This is the same as the 375/303 WR but loaded with the Swift bullet    

303 British case loaded with Swift bullet for match shooting   

Developed by John Richards in 1901 in the quest for cheap and convenient target practice. He took fired 303 British cases and reduced the length to 1.10” and loaded them with lead .303 bullets. The design was registered on the 3rd of December 1901 as Design No....

By Birmingham Metals & Munitions Company. The name ADDER is in all probability derived from Adderley Park Mills in Birmingham where it was manufactured. It is not a shortened 303 British as the dimension are smaller than the 303 case  

         The following is an article by John Pople-Crump in the June 1997 issue of the ECRA newsletter 385-25/ From lohn Pople-Crump (G.B.) June 1997 A brief history of the, .303 Magnum cartridge: 1919-1932: In 1919, the National Rifle...

   The following is an article by John Pople-Crump in the June 1997 issue of the ECRA newsletter 385-25/ From lohn Pople-Crump (G.B.) June 1997 A brief history of the, .303 Magnum cartridge: 1919-1932: In 1919, the National Rifle Association of Great Britain...

Developed by Daniel Fraser, gunsmith in Edinburgh, this is a rimless version of the 303 British.      

This is the 303 British loaded with the Fraser oblique ratchet bullet      

Steel adaptor for the Vickers machine gun with the .22 rimfire chamber drilled off-center so that the centerfire firing pin strikes the rimfire base.   

Consists of a steel auxiliary device with a removing breech plug with a spring loaded pin on the side which matches a hole near the head when in place. The front face has a rim firing pin for the .22 LR ammunition used. Smooth bored to the muzzle and was used for...

Cartridge has a reverese bevelled rim that was fitted into the adapter case from the rear and was held in place at the shoulder. See also Fleming p. 140         

This is the single lip version. The adaptor case has a slit down the neck into the shoulder with a right-angle notch so that the cartridge could be pushed into the case mouth and lip on the head indexed into the notch to hold it in place against the firing pin body.

From around the early 1890's by Daniel Fraser, an Edinburgh gunsmith. Not very popular and faded from the scene relatively early. Based on the 360 No. 5 Rook necked down   

From around 1898 for the Lead hollow point version (K305) according to Fleming. There is also a lead round nosed version (K300) that dates from 1895.   

From around 1895 for the Lead round nosed version (K300) according to Fleming. There is also a hollow point version (K305) that dates from 1898.   

Probably from around 1904-05 and listed in the 1909 catalogue, it was developed by Westley Richards for use in single shot target rifles.    The above specimen is a South African loaded round by R.E.S. It was probably made in the late 1970’s to early 1980’s...

Introduced in 1902, this is the 300 Rook cartridge designed for "mid-range" target shooting. It has a longer bullet with external cannelures for lubrication. It was felt at the time that the 80gr. bullet of the 300 Rook cartridge was too light  for distance...

Popular rook and rabbit cartridge in England.

The 300 H&H Magnum was introduced by them in 1925 and still remains a popular calibre. Please see 300 H&H MAGNUM under Imperial Sporting cartridges

This is the rimmed version of the 300 Holland & Holland Magnum for double rifles. Bertram Brass Australia       Box by Wolfgang Romey    

Nothing more than the British version of the 30-40 Krag. James Purdey made some double rifles for this.                                 By OPM in South Africa, this is a replica...